Elastic vehicle suspension with shock compensation



Nov. 15, 1932. A. CAROZZI 1,887,579

ELASTIC VEHICLE SUSPENSION WITH SHOCK COMPENSATION Filed Jan. 15, 1930 Patented Nov. 15, 1932 UNITED STATES} AUGUSTO CAROZZI, OF ROME, ITALY ELASTIC VEHICLE SUSPENSION WITH SHOCK COMPENSATION Application filed January 13, 1930. Serial No. 4=2O,585.'v

The present invention relates to a vehicle spring suspension and as its object contemplates the provision of a vehicle spring suspension with shock compensation the main feature of which consists in the provision of spring arm members so arranged relative to each other and to a support on the vehicle axle that they form two triangles forwardly and rearwardly of the support. The support constitutes the base of each triangle while the apices of the triangles are operatively connected to arms or the like carried in turn by the sides of the vehicle frame. The spring arm members each comprise a cylindrical casing with a reciprocating piston therein the stroke of which is governed at both ends by helical springs, the tension of the springs being varied by suitable adjustable means secured to the ends of the cylinder.

The invention is clearly illustrated in the accompanying drawing, in which Fig. 1 is a side elevation of the improved vehicle wheel suspension according to the invention, and

Fig. 2 shows on a larger scale a longitudinal sectional detail of one ofthe spring arm members.

Referring now, moreparticularly to the drawing; there is provided an axle A arranged beneath the vehicle frame B. A support 1 is loosely connected to the axle while to the upper part at 2 and 3 are pivotally connected the heads 4 of pistons 5 while at the lower part, at 7 and 8' are pivotally connected the heads 9 of cylindrical casings 10.

The front end of the vehicle frame is bent downwardly and constitutes an arm to which at 10 is pivotally connected the head 4 of a rod 5 while at a point 11 directly thereabove is pivotally connected the head 9 of the corresponding casing. An arm C is fixed to and depends from the frame rearwardly of the axle and has pivotally connected thereto at 12 the head 4 of a rod 5 while the head 9 of the corresponding casing is pivotally connected to the arm at a point 13 above the point 12.

The spring members as noted, each com- 7 prise springs 14:- and 15 operated by the intermediate piston 6 on a rod 5 and these parts form a unit. Each whole unit is placed in a casing 16 terminating at one end in a head 9 whilst at the other end is adj ustablymounted an elastic controlling sleeve 17 which latter has a broad extension 18 provided with a nut for operating the same, while the bore of the extension slidably receives the rod 5 and pistons 6. V v

A screw lock 19 is arranged in an opening in the casing and acts in combination with a 1" piston which is provided with grooves for admitting and circulating a'lubricant.

' It is to be noted that the support 1 constitutes the base of a triangle formedby the support and the spring arm members. In addition the four spring arm members arranged in rhombus formation or as triangles forwardly and rearwardly of the axle are coordinated in such away with respect to each other that the elastic movement of the pair situated below the axle is instantly compensated by the elastic movement of the pair situated above the axle and vice versa so that both action of a pair and contemporary reaction of the other pair contribute to the absorption of shocks.

In dotted lines in Fig. 1 is shown the different positions assumed by the supoprt 1 and the triangular arrangement of the spring arm members. When riding over bumpy or uneven ground the support 1 moves vertically in opposite directions the shocks being absorbed and compensated by the action of the spring arm members. 7

Having now particularly described and ascertained the nature of my invention and in what manner the same is tobe performed, I declare that what I claim is A spring suspension for motor vehicles, including in combination with the frame of the vehicle, an axle, arms extending from the frame forwardly and rearwardly of the axle, a support loose on the axle extending above and below the same, spring arm members arranged in pairs rearwardly and forwardly of the axle and having the respective ends pivotally connected to the support and adjacent arms and cooperating with the support to form triangles forwardly and rearwardly of the axle.

In testimony whereof I have hereunto signed my name.

AUGUSTO GAROZZI. 

